Предмет: Геометрия, автор: Marie5SaSHiNa

Помогите решить последние две задачи

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Автор ответа: 7Dasha777

3) Так как угол К = 90, то расстояние от точек М и Н будет кратчайшее, следовательно, НК=5, МК=12, следовательно так как периметр этого треугольника равен 30, то МН=30-(12+5)=13см.
4)Тут надо доказывать через свойство равнобедренного треугольника ( углы прикосновении равны), и признак по которому треугольники будут равны - по стороне и двум прилежащим к ней углам.

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